AN: Thanks to XxBlackShadowMagicxX for the idea.

Sebastian began to tense up the closer he got. He's avoided this entire area for the past 5 years, but today's trip was unavoidable. His new client lived down the block and he had stupidly agreed to a home meeting before realizing just how close it was to his-their-former building. He stopped in front of the building and found the window to the apartment he shared with Kurt. He sighed deeply, this was not the time to take a trip down memory lane, but he couldn't help it.

Sebastian thought back to one of the worst days of his life, the day Kurt left. He watched as Kurt packed away the last of his things. In a matter of minutes Kurt would leave the apartment they've shared for the past 3 years and he would probably never see him again. He was about to lose the best thing in his life and he only had himself to blame.

Sebastian loved Kurt and Kurt loved him in return, but things between them had always been rocky. They both had fiery personalities and clashed more often than not. Friends and family often asked why they stayed together and the answer was simple; love. Because despite the constant bickering they did love each other. Their good times far outweighed the bad, and for them that was enough. But love can only go so far.

It was a night like any other, Sebastian told Kurt he was going out for a case winning drink with the guys from work and he would be home soon. Soon turned into 6 hours later. When Sebastian got home he found Kurt waiting in the kitchen. Admittedly he was a bit drunk and didn't notice how upset Kurt was. He tried to kiss him and was pushed away, thus began a new fight. Sebastian figured it would be the same as the others. They would fight about Sebastian being late and not calling. They would yell at each other. Say things they didn't mean before they eventually calmed down long enough to have heated make up sex, then all would be right in the world. But this time was different.

Kurt had reached his breaking point. Unbeknownst to Sebastian, Kurt had been thinking about the unhealthiness of their relationship for some time. He was worried that things would never get better and he didn't know if he could handle it anymore. Sebastian coming home late, again, proved to him that things would never change. Sebastian tried to convince him to stay, that they belonged together, but Kurt could not be persuaded. The day Kurt left was the hardest day of his life. He had to watch as Kurt packed up their life and leave him. He didn't say anything to stop him, he had his chance and lost it.

Sebastian shook his head bringing him back to the present. It was useless to dwell on the past. Kurt was gone and nothing would change that, especially now that Kurt was with Seth. Despite his better judgment he'd kept tabs on Kurt through the years, he just wanted to know that Kurt was happy . After a few failed relationships it seemed like Kurt had finally settled down.

Sebastian had always hoped that one day he would get his chance again. When Kurt left he was forced to really look at himself. He had changed a lot through the years, he grew up. He was still the same person but he was more responsible and he knew, he just knew that if he could try again with Kurt it would work this time.

But Kurt had Seth now and Sebastian had no one. And that's just the way it was.